Electric drive inverter top cover and vehicle with same

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The electric drive inverter top cover with a steel and damping material sandwich structure and reinforcing ribs addresses high inverter noise, achieving noise reduction and lightweight design with improved structural safety and reduced manufacturing costs.

CN222283058UActive Publication Date: 2024-12-31CHINA FAW CO LTD

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Patent Information

Application Number: CN202323388757.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2023-12-12
Publication Date: 2024-12-31
Estimated Expiration: 2033-12-12

AI Technical Summary

Technical Problem

Existing electric drive inverters in vehicles suffer from high noise levels, particularly at low speeds, due to inverter noise, which affects user experience and is not effectively addressed by current solutions.

Method used

The electric drive inverter top cover is designed as a sandwich structure with a steel plate material and damping material, incorporating reinforcing rib structures and a stamping integration process, reducing manufacturing complexity and cost while enhancing noise absorption and structural strength.

Benefits of technology

The solution effectively reduces noise, achieves lightweight design, improves structural safety, and lowers manufacturing costs by using a sandwich structure with steel and damping materials, along with reinforcing ribs, while maintaining structural integrity.

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Abstract

The utility model provides an electrically driven inverter top cover and a vehicle with the same. The electric drive inverter top cover comprises a first cover body, a second cover body and a third cover body which are sequentially arranged from the top of the electric drive inverter to the outside, the first cover body and the third cover body are made of steel plate materials, and the second cover body is made of damping materials. According to the technical scheme of the utility model, the top cover of the electrically driven inverter is of a sandwich structure made of steel plate materials and damping materials, so that noise can be effectively absorbed, electrically driven noise can be reduced, the overall weight can be reduced, and the safety of the structure can be improved while light weight is realized.

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Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an electric drive inverter top cover and a vehicle having the same. Background Art

[0002] The noise and vibration characteristics of electric vehicles are one of the important factors in the competitiveness of automobiles. As the source of noise and vibration of the whole vehicle, the vibration of the all-in-one electric drive assembly can be decomposed into motor noise and inverter noise from the structure. From the current bench test, the electric drive noise existing at a low speed of a certain motor is mainly inverter noise. The vibration noise test shows that the maximum noise measurement point at this speed is at the inverter top cover. After analysis, the corresponding low-frequency noise peak has the characteristics of high sound intensity, low frequency, and severe howling, which greatly affects the user experience and must be suppressed.

[0003] Currently, no effective solution has been proposed for the technical problem of high inverter noise. Utility Model Content

[0004] The main purpose of the utility model is to provide an electric drive inverter top cover and a vehicle having the same, so as to solve the problem of high electric drive noise in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an electric drive inverter top cover is provided, and the electric drive inverter top cover includes a first cover body, a second cover body and a third cover body which are arranged in sequence outward along the top of the electric drive inverter, wherein the first cover body and the third cover body are made of steel plate material, and the second cover body is made of damping material.

[0006] Furthermore, the electric drive inverter top cover is made by a stamping integration process.

[0007] Furthermore, a plurality of reinforcing rib structures are provided on the outer surface of the electric drive inverter top cover, and the reinforcing rib structures are extended along the edge of the electric drive inverter top cover toward the geometric center of the electric drive inverter top cover.

[0008] Furthermore, the thickness of the second cover is H, wherein 0.01 mm≤H≤0.10 mm.

[0009] Furthermore, the thickness of the electric drive inverter top cover is 2.5 mm.

[0010] Furthermore, a plurality of bolt mounting holes are provided on the top cover of the electric drive inverter, and the plurality of bolt mounting holes are arranged at intervals along the circumference of the top cover of the electric drive inverter.

[0011] Furthermore, two positioning pin holes are provided on the top cover of the electric drive inverter, and the two positioning pin holes are symmetrically arranged about the geometric center of the top cover of the electric drive inverter.

[0012] According to another aspect of the utility model, a vehicle is provided, the vehicle has an electric drive inverter, the electric drive inverter has an electric drive inverter top cover, and the electric drive inverter top cover is the above-mentioned electric drive inverter top cover.

[0013] By applying the technical solution of the utility model, the top cover of the electric drive inverter is a sandwich structure made of steel plate material and damping material, which can effectively absorb noise and reduce electric drive noise. At the same time, it reduces the overall weight, thereby achieving lightweight and improving the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 A schematic structural diagram of a first embodiment of an electric drive inverter top cover according to the utility model is shown;

[0016] Figure 2 A schematic structural diagram of a second embodiment of an electric drive inverter top cover according to the utility model is shown;

[0017] Figure 3 A schematic structural diagram of a third embodiment of an electric drive inverter top cover according to the utility model is shown;

[0018] Figure 4 A schematic structural diagram of a fourth embodiment of an electric drive inverter top cover according to the utility model is shown;

[0019] Figure 5 A structural schematic diagram of a fifth embodiment of an electric drive inverter top cover according to the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 1. A first cover body;

[0022] 2. The second cover;

[0023] 3. The third cover;

[0024] 4. Strengthen the rib structure;

[0025] 5. Bolt mounting holes;

[0026] 6. Positioning pin hole. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0031] To facilitate the description of the technical effects of the present application, the electric drive inverter top cover in the prior art is introduced as follows:

[0032] The inverter cover is an important part of the inverter structure, which plays the role of sealing, protection, interlocking, limiting, shielding, supporting, cooling, insulation, etc. Its structure not only affects the mechanical strength and appearance of the motor, but also affects the overall processing and assembly process of the inverter. Its structure not only affects the mechanical strength and appearance of the inverter, but also affects the processing and overall assembly process of the inverter. More importantly, the structure and assembly of the cover will affect the modal characteristics of the inverter and is an important indicator affecting the vibration and noise of the inverter.

[0033] At present, the inverter top cover used in the market mainly adopts high-pressure casting aluminum alloy material process, which has complex structure, high manufacturing difficulty, high scrap rate, high processing difficulty, requires a large number of reinforcing ribs to be set in design, electrical clearance design is difficult, and the balance is relatively low. The first-order mode is limited by the material and casting process, and the upper limit of the mode is low in the same design space. At the same time, the high-pressure casting aluminum alloy process requires more supporting environmental protection measures, which limits the corresponding production capacity, the upper limit of the material yield is low, and the manufacturing cost is high.

[0034] That is to say, in the prior art, the inverter top cover has technical problems such as failure to effectively suppress noise, complex manufacturing process and high manufacturing cost.

[0035] Combination Figures 1 to 5 As shown, according to a specific embodiment of the present application, an electric drive inverter top cover is provided.

[0036] Specifically, the electric drive inverter top cover includes a first cover body 1, a second cover body 2 and a third cover body 3 which are sequentially arranged outward along the top of the electric drive inverter, wherein the first cover body 1 and the third cover body 3 are made of steel plate material, and the second cover body 2 is made of damping material.

[0037] By applying the technical solution of this embodiment, the top cover of the electric drive inverter is a sandwich structure made of steel plate material and damping material, which can effectively absorb noise and reduce electric drive noise. At the same time, it reduces the overall weight, thereby achieving lightweight and improving the safety of the structure.

[0038] Specifically, the electric drive inverter top cover is made by a stamping integration process. Compared with the traditional high-pressure casting aluminum alloy material process, the stamping process reduces the manufacturing cost and improves the production and manufacturing cutting.

[0039] Furthermore, the outer surface of the electric drive inverter top cover is provided with a plurality of reinforcing rib structures 4, and the reinforcing rib structures 4 are extended along the edge of the electric drive inverter top cover toward the geometric center of the electric drive inverter top cover. The reinforcing rib structures 4 can improve the overall structural strength, thereby improving the structural stability and reducing the structural shaking noise.

[0040] In an exemplary embodiment of the present application, the reinforcing rib structure 4 is extended along the edge of the electric drive inverter top cover toward the geometric center of the electric drive inverter top cover, which can further enhance the structural strength. According to actual needs, the reinforcing rib structure can also be set to a grid-like structure.

[0041] Preferably, the thickness of the second cover 2 is H, wherein 0.01 mm ≤ H ≤ 0.10 mm. In an exemplary embodiment of the present application, the thickness of the second cover 2 is 0.05 mm. Limiting the thickness of the second cover 2 within a reasonable range can ensure structural strength while effectively reducing noise.

[0042] Optionally, the thickness of the electric drive inverter top cover is 2.5 mm. The thickness of the electric drive inverter top cover can be adjusted according to actual needs to adapt to different electric drive inverters and different vehicle models. The thickness of the electric drive inverter top cover should take into account structural strength, structural stability and noise reduction effect.

[0043] Specifically, the top cover of the electric drive inverter is provided with a plurality of bolt mounting holes 5, and the plurality of bolt mounting holes 5 are arranged at intervals along the circumference of the top cover of the electric drive inverter. The top cover of the electric drive inverter is connected to the main body of the electric drive inverter through the bolt mounting holes 5, and the plurality of bolt mounting holes 5 are arranged at intervals along the circumference of the top cover of the electric drive inverter to ensure connection stability.

[0044] Specifically, two positioning pin holes 6 are provided on the top cover of the electric drive inverter, and the two positioning pin holes 6 are symmetrically arranged about the geometric center of the top cover of the electric drive inverter. The arrangement of the positioning pin holes 6 can facilitate the rapid positioning and assembly of the inverter, and the symmetrical arrangement of the two positioning pin holes 6 about the geometric center of the top cover of the electric drive inverter can further improve the convenience of installation.

[0045] According to another specific embodiment of the present utility model, a vehicle is provided, the vehicle has an electric drive inverter, the electric drive inverter has an electric drive inverter top cover, and the electric drive inverter top cover is the above-mentioned electric drive inverter top cover.

[0046] The present application also provides a preferred embodiment of an electric drive inverter top cover for reducing noise modes. The electric drive inverter top cover is a sandwich panel made by extrusion of two different materials. Compared with ordinary top covers, it has the following advantages: 1) maximum weight reduction of about 50%; 2) maximum space saving of about 50%; 3) shock and noise reduction; 4) high energy absorption rate; 5) heat insulation and fire prevention; 6) high strength and stiffness; 7) good impact resistance; 8) good corrosion resistance; 9) reduced manufacturing and installation costs; 10) greatly reduced overall costs.

[0047] Specifically, the electric drive inverter is mainly composed of a main box, a control board, a shielding plate drive board, a module, a busbar and other structures. The inverter is in the shape of an arched rectangle. The inverter top cover includes two locating pins and 18 bolt mounting points. There is a reinforcing rib structure 4 on the top to enhance the modality and strength of the top cover. Among them, the electric drive inverter top cover is composed of three parts, which is a sandwich plate. The upper and lower parts are made of ordinary steel plate materials, and the middle internal material is a damping material. The thickness of the damping material is 0.05mm, and the total thickness of the top cover is 2.5mm. The upper and lower panels have relatively large stiffness and density, and mainly bear bending and in-plane loads. The core damping material has relatively low stiffness and density, and is mainly used to support and fix the panels and transmit shear loads. Specifically, the electric drive inverter top cover is a convex ridge on the surface of the top cover.

[0048] The beneficial effects of this embodiment are:

[0049] 1) The electric drive inverter top cover in this embodiment has a simple structure and is easy to process;

[0050] 2) The electric drive inverter top cover is stamped and integrated with two different materials, which can better reduce the overall weight. Compared with the top cover produced by ordinary die-casting process, it has the characteristics of high specific stiffness, high specific strength, and strong energy absorption. These characteristics enable the sandwich panel to achieve lightweight while improving the safety of the structure; in addition, the design of the sandwich panel can further bring advantages such as space saving, noise control, heat transfer performance and fire resistance.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0053] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric drive inverter top cover, characterized in that: The electric drive inverter top cover comprises a first cover body (1), a second cover body (2) and a third cover body (3) which are arranged in sequence outwardly along the top of the electric drive inverter, wherein the first cover body (1) and the third cover body (3) are made of steel plate material, and the second cover body (2) is made of damping material.

2. The electric drive inverter top cover according to claim 1, characterized in that: The electric drive inverter top cover is made by a stamping integration process.

3. The electric drive inverter top cover according to claim 1, characterized in that: The outer surface of the electric drive inverter top cover is provided with a plurality of reinforcing rib structures (4), and the reinforcing rib structures (4) are extended along the edge of the electric drive inverter top cover toward the geometric center of the electric drive inverter top cover.

4. The electric drive inverter top cover according to claim 1, characterized in that: The thickness of the second cover body (2) is H, wherein 0.01 mm ≤ H ≤ 0.10 mm.

5. The electric drive inverter top cover according to claim 1, characterized in that: The thickness of the electric drive inverter top cover is 2.5 mm.

6. The electric drive inverter top cover according to claim 1, characterized in that: A plurality of bolt mounting holes (5) are provided on the top cover of the electric drive inverter, and the plurality of bolt mounting holes (5) are arranged at intervals along the circumference of the top cover of the electric drive inverter.

7. The electric drive inverter top cover according to claim 1, characterized in that: Two positioning pin holes (6) are provided on the top cover of the electric drive inverter, and the two positioning pin holes (6) are symmetrically arranged about the geometric center of the top cover of the electric drive inverter.

8. A vehicle, the vehicle having an electric drive inverter, the electric drive inverter having an electric drive inverter top cover, characterized in that: The electric drive inverter top cover is the electric drive inverter top cover according to any one of claims 1 to 7.